International audienceFrance's regions are undergoing organisational change. Decentralisation measures are being implemented in conjunction with the development of decentralised State administration and other changes aimed at reorganising the regions in accordance with various more modern methods, which are more visible at European and world level (large regions, metropolitanisation, etc.). The longer timescale of legal norms, administrative transformations and social structures is being overtaken by the upheavals of regional reforms, conceived over short periods of time and regularly subjected to challenge. Consequently, the constantly evolving scope of regional public policy is coming into conflict with the timescales that apply within re...